Other important scientists

Democritus

http://en.wikipedia.org/wiki/Democritus#Atomic_hypothesis
Summarize his theory of the atom.
Who were his critics and what theories were postulated to challenge his?

James Chadwick
http://en.wikipedia.org/wiki/James_Chadwick
What did he discover and when? Why did it take so long to make this discovery?

Louis DeBroglie
http://www.kentchemistry.com/links/AtomicStructure/wavesElectrons.htm
Explain his contribution to the wave-particle duality theory.

Robert Millikan
http://www.kentchemistry.com/links/AtomicStructure/Millikan.htm
What is Millikan’s major contribution?
Watch the video that animates the Oil Drop Experiment. Let’s pretend that you have to explain what happened in this experiment to a class of fourth graders. How did the experiment work and what did Millikan find out? You cannot use any big fancy words!!!

Erwin Schrodinger and Werner Heisenberg
http://www.kentchemistry.com/links/AtomicStructure/schrodinger.htm
State Heisenberg’s Uncertainty Principle.
Explain Schrodinger’s contribution to the model of the atom.
Find visuals that show what Schrodinger’s s, p, d, and f energy sublevels look like.